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1. 发明申请

US20080065393A1 Playback of compressed media files without quantization gaps 有权
标题翻译：压缩媒体文件的播放没有量化间隙
公开(公告)号：US20080065393A1
公开(公告)日：2008-03-13
申请号：US11519389
申请日：2006-09-11
申请人： William S. Kincaid
发明人： William S. Kincaid
IPC分类号： G10L21/00
CPC分类号： G11B27/034 , G10L19/167 , G11B27/105 , G11B27/3027 , G11B2220/2545
摘要： Playback by a decoder of a lossy compressed digital media file without quantization gaps, wherein the digital media file is formed of a number of audio samples grouped into a corresponding number of audio frames. As a method, the invention is carried out by identifying an encoder used to compress the digital media file; obtaining an encoder delay value for the identified encoder; obtaining a decoder delay value for the decoder; determining a audio sample count corresponding to a last valid audio sample; setting a re-synchronization after seek option marker N audio frames from the last valid audio sample; and decoding only valid audio samples using the encoder delay value, the decoder delay value, and the sample count corresponding to the last valid audio sample.
摘要翻译：没有量化间隙的无损压缩数字媒体文件的解码器回放，其中数字媒体文件由分组成相应数量的音频帧的多个音频样本组成。作为一种方法，本发明通过识别用于压缩数字媒体文件的编码器来实现; 获得所识别的编码器的编码器延迟值; 获得解码器的解码器延迟值; 确定对应于最后有效音频样本的音频采样计数; 在最后一个有效音频样本之后，选择标记N个音频帧，设置重新同步; 并且仅使用编码器延迟值，解码器延迟值和对应于最后有效音频样本的样本计数来仅解码有效音频样本。

2. 发明授权

US08190441B2 Playback of compressed media files without quantization gaps 有权
标题翻译：压缩媒体文件的播放没有量化间隙
公开(公告)号：US08190441B2
公开(公告)日：2012-05-29
申请号：US11519389
申请日：2006-09-11
申请人： William S. Kincaid
发明人： William S. Kincaid
IPC分类号： G10L21/00
CPC分类号： G11B27/034 , G10L19/167 , G11B27/105 , G11B27/3027 , G11B2220/2545
摘要： Playback by a decoder of a lossy compressed digital media file without quantization gaps is disclosed. The digital media file can be formed of a number of audio samples grouped into a corresponding number of audio frames. As a method, one embodiment can be carried out by identifying an encoder used to compress the digital media file; obtaining an encoder delay value for the identified encoder; obtaining a decoder delay value for the decoder; determining a audio sample count corresponding to a last valid audio sample; setting a re-synchronization after seek option marker N audio frames from the last valid audio sample; and decoding valid audio samples using the encoder delay value, the decoder delay value, and the sample count corresponding to the last valid audio sample.
摘要翻译：公开了一种没有量化间隙的有损压缩数字媒体文件的解码器回放。数字媒体文件可以由分组成相应数量的音频帧的多个音频样本形成。作为一种方法，可以通过识别用于压缩数字媒体文件的编码器来执行一个实施例; 获得所识别的编码器的编码器延迟值; 获得解码器的解码器延迟值; 确定对应于最后有效音频样本的音频采样计数; 在最后一个有效音频样本之后，选择标记N个音频帧，设置重新同步; 并使用编码器延迟值，解码器延迟值和对应于最后有效音频样本的采样计数来解码有效音频采样。

3. 发明授权

US07469208B1 Method and apparatus for automatically normalizing a perceived volume level in a digitally encoded file 有权
标题翻译：用于在数字编码文件中自动归一化感知音量级别的方法和装置
公开(公告)号：US07469208B1
公开(公告)日：2008-12-23
申请号：US11433163
申请日：2006-05-12
申请人： William S. Kincaid
发明人： William S. Kincaid
IPC分类号： G10L21/00 , G10L19/00 , H03F7/00
CPC分类号： H03G5/005 , G06Q99/00 , H03G3/3089 , H04H20/95
摘要： Automatically normalizing a perceived loudness for a digitally encoded audio track formed of a number of channels during playback on a multimedia asset player is described. A number of auditory selectivity frequency bands are selected and for each channel in the track, a power value for each of the number of selectivity frequency bands is computed. Each of the power values is weighted by a sensitivity weighting factor and a sum value of all the weighted power values is then calculated. For the track, a perceived acoustic power value is calculated based upon the sum value for each of the channels and a normalization gain factor based upon the perceived acoustic power is calculated and associated with the track. During playback, the normalization gain factor is applied to the track.
摘要翻译：描述了在多媒体资产播放器上播放期间，由多个频道形成的数字编码音轨的感知响度的自动归一化。选择多个听觉选择性频带，并且对于轨道中的每个通道，计算多个选择性频带中的每一个的功率值。每个功率值由灵敏度加权因子加权，然后计算所有加权功率值的和值。对于轨道，基于每个通道的和值来计算感知的声功率值，并且基于感知的声功率计算并与轨道相关联的归一化增益因子。在播放期间，归一化增益因子被应用于轨道。

4. 发明授权

US07072477B1 Method and apparatus for automatically normalizing a perceived volume level in a digitally encoded file 有权
标题翻译：用于在数字编码文件中自动归一化感知音量级别的方法和装置
公开(公告)号：US07072477B1
公开(公告)日：2006-07-04
申请号：US10192231
申请日：2002-07-09
申请人： William S. Kincaid
发明人： William S. Kincaid
IPC分类号： H03G3/00 , H04R29/00 , G08B3/00 , G10K1/064 , G10L19/00
CPC分类号： H03G5/005 , G06Q99/00 , H03G3/3089 , H04H20/95
摘要： Automatically normalizing a perceived loudness for a digitally encoded audio track formed of a number of channels during playback on a multimedia asset player is described. A number of auditory selectivity frequency bands are selected and for each channel in the track, a power value for each of the number of selectivity frequency bands is computed. Each of the power values is weighted by a sensitivity weighting factor and a sum value of all the weighted power values is then calculated. For the track, a perceived acoustic power value is calculated based upon the sum value for each of the channels and a normalization gain factor based upon the perceived acoustic power is calculated and associated with the track. During playback, the normalization gain factor is applied to the track.
摘要翻译：描述了在多媒体资产播放器上播放期间，由多个频道形成的数字编码音轨的感知响度的自动归一化。选择多个听觉选择性频带，并且对于轨道中的每个通道，计算多个选择性频带中的每一个的功率值。每个功率值由灵敏度加权因子加权，然后计算所有加权功率值的和值。对于轨道，基于每个通道的和值来计算感知的声功率值，并且基于感知的声功率计算并与轨道相关联的归一化增益因子。在播放期间，归一化增益因子被应用于轨道。

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